ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
E. E. Anderson, G. L. Wessman, L. R. Zumwalt
Nuclear Science and Engineering | Volume 12 | Number 1 | January 1962 | Pages 106-110
Technical Paper | doi.org/10.13182/NSE62-A25377
Articles are hosted by Taylor and Francis Online.
High-temperature, gas-cooled, graphite-moderated reactors of the type represented by the HTGR feature a continuous removal of volatile fission products by, and their subsequent trapping from, a helium purge stream. Cesium is a volatile fission product of considerable interest; therefore, an investigation of the specific sorption (gm Cs /gm C) of activated charcoal as a function of temperature and pressure was undertaken. The experimental approach was to use Cs137-tagged metal of known specific activity whereby the amount of cesium sorbed on charcoal could be determined in situ by a calibrated gamma-ray spectrometer system. Cesium adsorption on activated charcoal was found to follow the Freundlich adsorption equation. Isosteric heats of adsorption are given as functions of specific adsorption. The free energy of adsorption was found to be a linear function of the specific adsorption only, thus leading to a method of determining the adsorption isobars and isotherms from a minimum of data.
